2814-60-0Relevant academic research and scientific papers
Excited state electronic structures and photochemistry of different oxidation states of 2,2′-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS)
Ji, Feixiang,Guo, Yurong,Wang, Mengqi,Wu, Zibo,Shi, Yanan,Zhao, Xiaoying,Wang, Haiyuan,Feng, Xia,Zhao, Guangjiu
, (2021)
The molecular structures of 2,2-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), were calculated by using time-dependent density functional theory (TDDFT) model with M062X method with 6-311G (d, p) basis set. In this work, the ABTS were theoreti
Highly efficient and practical method for synthesis of 2,2′-Azino-bis(3-ethyl-benzothiazoline-6-sulfonic Acid) (ABTS) and its diammonium salt
Chen, Junmin,Zhou, Xiaomeng,Yuan, Tangjun
, p. 3630 - 3636 (2014)
A highly efficient and practical protocol for synthesis of 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) and its diammonium salt has been carried out by six steps. On comparison of the traditional methods, the present protocol has many adv
Preparation method of 2, 2'-azino-bis(3-alkylbenzothiazoline-6-sulfonic acid) salt
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Paragraph 0034; 0044-0047; 0062; 0072-0075; 0090; 0100-0103, (2020/11/23)
The invention discloses a preparation method of a 2, 2'-azino-bis(3-alkylbenzothiazoline-6-sulfonic acid) salt. The raw materials used in the preparation method are easily available, and the price islow, the production cost can be greatly reduced while ensuring a high reaction yield, so that enlarged production is facilitated, meanwhile, the preparation method is different from the previous new preparation process, and the new preparation process is beneficial to academic research, industrial research and practice of ABTS in the field, so that the development of related technologies and related industrial economy in the field is promoted.
Tuneable Redox Chemistry and Electrochromism of Persistent Symmetric and Asymmetric Azine Radical Cations
Werr, Marco,Kaifer, Elisabeth,Wadepohl, Hubert,Himmel, Hans-J?rg
supporting information, p. 12981 - 12990 (2019/11/05)
Molecular organic radicals have been intensively studied in the last decades, due to their interesting optical, magnetic and redox properties. Here we report the synthesis and characterisation of persistent organic radicals from one-electron oxidation of redox-active azines (RAAs), composed of two guanidinyl or related groups. By connecting two different groups together, asymmetric compounds result. In this way a series of compounds with varying redox potential is obtained that could be oxidised reversibly to the mono- and the dicationic charge states. The accessible redox states were fully determined by chemical redox reactions. The standard Gibbs free energy change for disproportionation of the radical monocation into the dication and the neutral molecule in solution, estimated from cyclovoltammetric measurements, varies between 43 and 71 kJ mol?1. While the neutral RAAs absorb predominately UV light, the radical monocations display strong absorptions covering almost the entire visible region and extending for some compounds into the NIR region. A detailed analysis of this highly reversible electrochromism is presented, and the fast switching characteristics are demonstrated in an electrochromic test device.
Method for synthesizing 2,2'-diamine-bis(3-ethylbenzothiazoline-6- sulfoacid)diamine salt
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Paragraph 0018; 0020, (2018/11/22)
The invention provides a method for synthesizing 2,2'-diamine-bis(3-ethylbenzothiazoline-6-sulfoacid)diamine salt(ABTS), which belongs to the field of organic synthesis. According to the invention, 2-hydroxybenzothiazole is reacted with 2-ethyl bromide to form 3-ethylbenzothiazole-2-ketone, and then is reacted with hydrazine hydrate to generate 2,2'-azino-bis(3-ethylbenzothiazoline), 2,2'-azino-bis(3-ethylbenzothiazoline) is subjected to a sulfonation reaction with concentrated sulfuric acid to generate a compound 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfoacid), and finally the compound isreacted with ammonia gas to generate 2,2'-diamine-bis(3-ethylbenzothiazoline-6-sulfoacid)diamine salt. The raw materials used in the invention are cheap and easy to obtain, the operation is simple andconvenient, the reaction conditions are mild, and the yield is high.
An ESR Study of the Cation Radicals of Azodibenzothiazolyls
Okada, Keiichi,Yamauchi, Jun,Deguchi, Yasuo
, p. 723 - 727 (2007/10/02)
Methyl and ethyl derivatives of thiobenzothiazole and their quaternary salts were prepared by the sealed glass tube method.Azinodibenzothiazoles were oxidized by lead(IV) acetate, giving cation radical salts with the boron tetrafluoride anion moiety.The well-resolved esr spectra observed were analyzed by comparing the data with those of a deuteriomethylated radical and with those from the MO calculations.Spin density distribution was consistently determined by computer simulation, including almost the same unpaired electron distribution on the four nitrogen atoms.
